Fully spin-polarized current in gated bilayer silicene

Xiao-Fang Ouyang, Ze-Yi Song, and Yu-Zhong Zhang
Phys. Rev. B 98, 075435 – Published 28 August 2018

Abstract

By applying density functional theory calculations, we predict that the ground state of bilayer silicene at certain interlayer distances can be antiferromagnetic. At small electron or hole doping, it becomes half metallic under applied out-of-plane electric field, which can be used to produce a fully spin-polarized field-effect-driven current even in the absence of an external magnetic field, ferromagnetic substrates, doped magnetic ions, or spin-orbital coupling. Our finding points out a route to overcome the major challenge of spintronics.

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  • Received 8 May 2018

DOI:https://doi.org/10.1103/PhysRevB.98.075435

©2018 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Xiao-Fang Ouyang1,2, Ze-Yi Song1, and Yu-Zhong Zhang1,*

  • 1Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
  • 2School of New Energy Science and Engineering, Xinyu University, Jiangxi 338000, People's Republic of China

  • *Corresponding author: yzzhang@tongji.edu.cn

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Issue

Vol. 98, Iss. 7 — 15 August 2018

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